Martha's nickname is Clyde. She may have been pregnant when she disappeared.

Martha was last seen leaving a nightclub in Sumter, South Carolina with a while male on March 29, 1972. Authorities believe Martha was the victim of serial killer Donald Henry "Pee Wee" Gaskins Jr. She matches the description of a girl he said he killed. Gaskins was executed in 1991 and was never charged with Martha's disappearance.